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Climate and geological change as drivers of Mauritiinae palm biogeography

Bogota-Angel, Giovanni and Huang, Huasheng and Jardine, Phillip E. and Chazot, Nicolas and Salamanca, Sonia and Banks, Hannah and Pardo-Trujillo, Andres and Plata, Angelo and Duenas, Hernando and Star, Wim and Langelaan, Rob and Eisawi, Ali and Umeji, Obianuju P. and Enuenwemba, Lucky O. and Parmar, Shalini and da Silveira, Rosemery Rocha and Lim, Jun Ying and Prasad, Vandana and Morley, Robert J. and Bacon, Christine D. and Hoorn, Carina (2021). Climate and geological change as drivers of Mauritiinae palm biogeography. Journal of Biogeography. 48 , 1001-1022
[Research article]

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Abstract

Aim Forest composition and distribution are determined by a myriad of factors, including climate. As models of tropical rain forest, palms are often used as indicator taxa, particularly the Mauritiinae. We question, what characterizes the Mauritiinae pollen in the global fossil record? And when did the Mauritiinae become endemic to South America?Location Global tropics.Taxon Mauritiinae palms (Arecaceae: Lepidocaryeae).Methods Pollen trait data from extinct and extant Mauritiinae pollen were generated from light-, scanning-, and transmission electron microscopy. Statistical morphometric analysis was used to define species and their relationships to other Mauritiinae. We also compiled a comprehensive pollen database for extinct and extant Mauritiinae and mapped their global geographical distribution from Late Cretaceous to present, using GBIF and fossil data.Results Our morphometric analysis identified 18 species (11 extinct and seven extant), all exhibiting exine indentations, a synapomorphy of the subtribe. The fossil taxa and early divergent extant Lepidocaryum are all monosulcate, whereas the extant Mauritia and Mauritiella species are all monoulcerate. Paleobiogeographical maps of fossil Mauritiinae pollen occurrences suggest the taxon originated in equatorial Africa during the Cretaceous, and expanded their range to South America, and to India in the Paleocene. Range retraction started in the early Eocene with extirpation from India, and reduction in diversity in Africa culminating at the Eocene-Oligocene Transition (EOT). In contrast, in South America, the distribution is maintained, and since the Neogene Mauritiinae palms are mostly restricted to swampy, lowland habitats.Main conclusions Morphometric analysis shows that since their origin Mauritiinae pollen are relatively species poor, and Mauritiidites resembles Lepidocaryum. We also conclude that the biogeographical history of the Mauriitinae and, by extension, tropical forests was strongly affected by global climatic cooling events. In particular, the climate change at the EOT was a fundamental determinant of current tropical forest distribution.

Authors/Creators:Bogota-Angel, Giovanni and Huang, Huasheng and Jardine, Phillip E. and Chazot, Nicolas and Salamanca, Sonia and Banks, Hannah and Pardo-Trujillo, Andres and Plata, Angelo and Duenas, Hernando and Star, Wim and Langelaan, Rob and Eisawi, Ali and Umeji, Obianuju P. and Enuenwemba, Lucky O. and Parmar, Shalini and da Silveira, Rosemery Rocha and Lim, Jun Ying and Prasad, Vandana and Morley, Robert J. and Bacon, Christine D. and Hoorn, Carina
Title:Climate and geological change as drivers of Mauritiinae palm biogeography
Series Name/Journal:Journal of Biogeography
Year of publishing :2021
Volume:48
Page range:1001-1022
Number of Pages:22
Publisher:WILEY
ISSN:0305-0270
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Physical Geography
Keywords:Arecaceae, Eocene–Oligocene Transition (EOT), fossil record, global cooling, interplate dispersal, Lepidocaryum, Mauritia, Mauritiella, Neotropics, palynology
URN:NBN:urn:nbn:se:slu:epsilon-p-111572
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111572
Additional ID:
Type of IDID
DOI10.1111/jbi.14098
Web of Science (WoS)000634436300001
ID Code:23384
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:03 May 2021 13:03
Metadata Last Modified:03 May 2021 13:11

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